He decided to use the strong magnets to make the hammer immoveable, as that was the best method.
The electromagnets switches on immediately when someone grasps the handle, attaching the hammer to the metal surface.
However, a fingerprint sensor that is keyed to Pans thumbprint can be used to turn off the hammer.
But the magnets switches on when Pan holds the hammer.
Pan challenged unsuspecting passersby on the streets of Venice Beach, California to lift the hammer.
One must say it is quite an impressive prank.
source: www.techworm.net
